In __blk_mq_end_request() if block stats needs update, we should ensure now is valid instead of 0 even when iostat is disabled.
Signed-off-by: Hou Tao <[email protected]> --- block/blk-mq.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 4d1462172f0f..56425e392825 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -281,12 +281,12 @@ bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx) EXPORT_SYMBOL(blk_mq_can_queue); /* - * Only need start/end time stamping if we have stats enabled, or using - * an IO scheduler. + * Only need start/end time stamping if we have iostat or + * blk stats enabled, or using an IO scheduler. */ static inline bool blk_mq_need_time_stamp(struct request *rq) { - return (rq->rq_flags & RQF_IO_STAT) || rq->q->elevator; + return (rq->rq_flags & (RQF_IO_STAT | RQF_STATS)) || rq->q->elevator; } static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data, -- 2.16.2.dirty
